Keywords
kvasarspektroskopi
galaksedannelse
How to Cite
Abstract
This article takes the reader directly to the observational frontier of cosmology with a thorough analysis of Damped Lyman-α (DLA) systems. Through spectroscopy of distant quasars, the authors uncover the cold neutral hydrogen reservoirs that constitute the building blocks of galaxies in the early Universe. They discuss covering fractions, absorption profiles, and the geometrical interpretation of few large versus many small clouds—elegantly illustrated on the cover. The article combines astrophysical theory and observation, demonstrating how distance determinations and absorption lines reveal the baryonic distribution at high redshift. For any physicist interested in cosmology and structure formation, this is a rigorous and empirically grounded exploration of how we actually “observe” the first galaxies.
References
[1] J. P. U. Fynbo og P. Møller (2000). Kvant, 11. årg., nr. 4, s. 22.
[2] M. Rauch (1998). Annual Review of Astronomy and Astrophysics, bind 36, s. 267. https://doi.org/10.1146/annurev.astro.36.1.267
[3] A. M. Wolfe m.fl. (1995). Astrophysical Journal, bind 454, s. 698. https://doi.org/10.1086/176523
[4] P. Møller og S. J. Warren (1993). Astronomy & Astrophysics, bind 270, s. 43.
[5] S. G. Djorgovski m.fl. (1996). Nature, bind 382, s. 234. https://doi.org/10.1038/382234a0
[6] J. U. Fynbo, P. Møller og S. J. Warren (1999). Monthly Notices of the Royal Astronomical Society, bind 305, s. 849.
https://doi.org/10.1046/j.1365-8711.1999.02520.x
[7] ESO = European Southern Observatory. Hovedkvarteret er i Tyskland, men observatoriet er i Chile (www.eso.org).
[8] P. Møller og S. J. Warren (1998). Monthly Notices of the Royal Astronomical Society, bind 299, s. 661.https://doi.org/10.1046/j.1365-8711.1998.01749.x
[9] P. Møller (2000). The Messenger, bind 99, s. 31.
[10] Katz m.fl. (1996). Astrophysical Journal Letters, bind 457, s. 57.
[11] J. U. Fynbo. Ph.d.-afhandling. Tilgængelig på: astro.ifa.au.dk/~jfynbo/publications.html#thesis
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